Pistol



Nov. 20 1923.

E. THIMGREN PISTOL Filed Dec. 28, 1922 I FIG. 1.

' Fatentecl Nov. 20, 1923.

UNHTED STATES PATENT OFFICE.

EDWARD THIMGREN, F POPOTLA, MEXICO.

PISTOL.

Application filed December 28, 1922. Serial No. 609,507.

.To all whom it may concern:

Be it known that I, EDWARD THIMGREN, a subject of the King of Sweden,residing at Popotla, Distrito Federal, Mexico, have invented certain newand useful Improveanents in Pistols, of which the following is aspecification.

This invention relates to new and useful improvements in pistols.

An important object of the invention is to provide an improved triggermechanism that is applicable to breech loading pistols, but may beequally as efiicient when applied to other types of fire-arms.

A further object of the invention is to provide an improved triggermechanism that is adapted to be actuated by the thumb instead of theusual trigger finger.

A further object of the invention is to provide a rest for theforefinger of the firing hand so that the same may be pointed along theside of the pistol parallel with the barrel, on the theory that a personcan more accurately aim when pointing a finger at an object.

A further object of the invention is to provide a trigger mechanism thatis simple in construction, reliable in operation, strong,

- and durable.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawing forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is aside elevation, partly in section, of the right side of apistol, and shows in dotted line the operators hand properly positionedin engagement with the same,

Figure 2 is a fragmentary elevational view, partly in section, showingthe left side of the pistol with a form of the trigger mechanismdisplayed in detail,

Figure 3 is a vertical sectional view on line IHIII of Fig. 2, and

Figure 4 is a fragmentary view, showing a modification of the triggermechanism in detail.

In the drawing, wherein for the purpose of illustration is shown apreferred embodiment of the invention, there is shown a pistol of theLuger or Borchardt type and consists of the barrel 1, barrel extension2, casing or frame 3 and hand grip 4. Re-

ferring more particularly to Figs. 1 and 3, wherein the right side ofthe pistol is shown, there is provided a longitudinally extending groove5 which is parallel with the barrel and along which the forefinger 6, asshown in dotted lines, rests. The object of this construction is tosupport the theory that one can always point the forefinger at an ob'ectwith more accuracy than a pistol.

eferring more particularly to Figs. 2 and 3, there is shown a chamber 7that extends along a portion of the forward part of the grip 4 and isadapted to house the trigger mechanism as shown. J ournalled to theopposite sides of the chamber 7 is a pin 8 to which is rigidly fixed thelever 9 and offset trigger 10. It is to be understood that the lever 9is positioned substantially on the central vertical plane of the pistoland that the offset trigger 10 is provided for positioning the thumbpiece 11 laterally of the left side of the grip 4 so that it may easilybe reached by the thumb of the operator. The angle portion 12 carried bythe upper end of the lever 9 is adapted to freely engage one end of adouble armed lever 13 that is pivotally supported to the wall of thechamber 7, as at 14. There is provided a spiral spring 15 that issecured to the inner wall of the chamber 7 as at 16, and engages theinner face of the lever 9 to normally retain the said lever in aposition against the pin 17. There is also provided a spring 18 that isadapted to normally retain one end of the double armed lever 13 intoengagement with the angle portion 12 of the lever 9. Pivotallysupported, as at 19 is a sear 20 that is provided with a laterallyextending arm 21 that extends through the opening 22, formed in the leftside of the chamber 7, to be engaged by the arm 23 of the lever 13. Theupper end 24, of the scar 20 is adapted to engage the firing pin 25 forretaining the same in its cocked position.

Referring particularly to Fig. 4 there is shown a modification of thetrigger mechanism and embodies a pivot pin 8 to which is rigidly fixedthe lever 9 and offset trigger 10 having a thumb piece 11' formed on itsouter end. The free end of the lever 9 is provided with an arcuateportion 12 that is adapted to engage the lower arm of the substantiallyZ-shaped lever l3 which is pivotally supported as at 14. A spiral spring15 is secured to the hand grip 4, as

at 16, and is provided for normally retaining the lever 9 in a positionagainst the stop pin 17 There is also provided a coil spring 18 that isadapted to bear against the lower arm of the substantially Z-shapedlever 13 to normally retain the same into engagement with the arcuateportion 12 of the lever 9 The sear 20 in this modification is ofsubstantially the same formation as the sear shown in Figs. 2 and 3 andis provided with a laterally extending arm 21 that is adapted to engagethe upper arm 23 of the substantially Z-shaped lever 13*. The upper end,24, of the sear 20 is also adapted to engage the firing pin 25 forretaining the same in its cocked position.

The operation of the device shown in Figs. 2 and 3 is as follows v Thefiring pin 25, having been moved into its cockedposition, isretained insuch position by the upper end, 24, of the sear 20. Whenv the user isdesirous of firing the pistol the thumb piece 11- is engaged by thethumb ofthe operator and is pressed downwardly torock the offset trigger10'and lever 9 with the pin 8 and against the spiral spring 15. Thismovement of the lever 9 will rock the double armed lever 13 through themedium of the angle portion 12 for throwing the arm 23 downwardly toengage against the laterally projecting arm 21 of the sear 20. Thismovement of the sear 20will cause the upper end, 2 1, to trip thetrigger pin 25 for firing the pistol. In the modification shown in Fig.4 the movement of the offset trigger 10 will cause the lever 9 to rockthe substantially Z-shaped lever 13 upon its pivot 14: for moving theupper arm 23 into engagement with the laterally projecting arm 21carried by the sear 20. This movement of the sear 20 will cause theupper end 24 to trip the trigger pin 25 for firing the pistol.

It is to be understood that the form of this invention herewith shownand described is to be taken as the preferred example of the same, andthat various changes in the size, shape and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the subjoined claims.

Having thus described the invention, I claim 1. The combination with apistol having a hand grip, a casing or frame carried by said hand grip,and a barrel secured to said frame of a finger rest formed in said frameand extending in parallelism with said barrel, a chamber formed in saidhand grip and said frame, a pivot pin journaled in said chamber, a leverfixed to said pin, a trigger fixed to said pin and projecting laterallyfrom said case, a pivotally mounted lever secured to said chamber andadapted to operatively engage said first mentioned lever, and a firingpin engaging sear operatively connected to said pivotally mounted leverfor actuating the sear to release the said firing pin from its cockedposition.

2. The combination with a pistol having a hand grip, a casing or framecarried by said hand grip, and a barrel secured to said frame of afinger rest formed in said frame and extending in parallelism with saidbarrel, a chamber formed in said hand grip and said frame, a pivot pinjournaled in said chamber, a resiliently operated lever fixed to'saidpin, a trigger, having a thumb piece, fixed to said pin and projectinglaterally from said chamber, a pivotally mounted lever secured to saidchamber and adapted to be resiliently held in operative engagement withthe first mentioned lever, and a firing pin engaging sear operativelyconnected to said pivotally mounted lever for actuating the sear torelease said firing pin from its cooked position.

3. The combination with a pistol having a hand grip, a casing or framecarried by said hand grip, and a barrel secured to said frame of afinger rest formed in said frame and extending in parallelism with saidbarrel, a chamber formed in said hand grip and said frame, a pivot pinjournaled in said chamber, a resiliently operated lever fixed to saidpin, a trigger, having a thumbpiece, fixed to said pin and projectinglaterally from said chamber, a pivotally mounted lever secured to saidchamber and adapted to be re siliently held into operative engagementwith the first mentioned lever, a firing pin engaging sear pivotallymounted on said frame, a laterally projecting arm carried by said searand adapted to enter said chamber through an opening formed the-rein tooperatively engage the pivotally mounted lever for actuating the sear torelease said firing pin from its cocked position.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

EDWARD THIMGBEN.

' itnesses:

LUIs G. Lnoiv, L. G. CRDovA.

